Assignee
Inventors
- Yukio Miyazaki (6 patents)
- Akira Shibata (4 patents)
- Tateo Yahagi (2 patents)
- Masayuki Hara (3 patents)
- Kaoru Hara (4 patents)
- Singo Yoneda (2 patents)
- Hiroko Kasahara (2 patents)
- Yuko Nakamura (3 patents)
US Patent 4212942 · Granted Jul 15, 1980